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Thread: 4164/41256 DRAM (memory) chips tester for C64 and more

  1. #31
    anemo's Avatar
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    Quote Originally Posted by mrr19121970 View Post
    Still interested. Payment coming
    Payment received! Will ship it today.

    EDIT: package shipped!
    Last edited by anemo; 3rd May 2019 at 07:31.
    A1200 | WB3.1 | 4Gb CF | ACA1233n/40+FPU | PCMCIA wifi card + C64 (-82 Breadbin) | C1541 | Pi1541

  2. #32
    Amibayer! Bryce's Avatar
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    Quote Originally Posted by anemo View Post
    New batch and upgraded version (v1.2) now available!

    New version has Arduino Nano output pins overcurrent protection (if DRAM chip is short circuited).

    Slight price increase due to higher component cost and longer time to assemble.

    Was 25.5 (v1.0), now 27.5 incl. shipping.

    First 5 available boards are reserved for the following guys (in this order) who previously has stated interest in this thread:
    * mrr19121970
    * botialoach
    * SaviorX
    * DonChaos
    * Knecht

    PM sent to each member!
    Cool, great improvement. How have you implemented the current protection? Series resistors on each pin or have you done something fancy?
    Do you have pictures of the new device?

    Bryce.

  3. #33
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    Quote Originally Posted by Bryce View Post
    Quote Originally Posted by anemo View Post
    New batch and upgraded version (v1.2) now available!

    New version has Arduino Nano output pins overcurrent protection (if DRAM chip is short circuited).

    Slight price increase due to higher component cost and longer time to assemble.

    Was €25.5 (v1.0), now €27.5 incl. shipping.

    First 5 available boards are reserved for the following guys (in this order) who previously has stated interest in this thread:
    * mrr19121970
    * botialoach
    * SaviorX
    * DonChaos
    * Knecht

    PM sent to each member!
    Cool, great improvement. How have you implemented the current protection? Series resistors on each pin or have you done something fancy?
    Do you have pictures of the new device?

    Bryce.
    Hi,

    Yes, series resistors (three resistor networks, one hidden under the Nano) for limiting the current to <30mA per pin. Thanks for the heads up, BTW!

    Check out the first post for updated picture.
    A1200 | WB3.1 | 4Gb CF | ACA1233n/40+FPU | PCMCIA wifi card + C64 (-82 Breadbin) | C1541 | Pi1541

  4. #34
    Amibayer! Bryce's Avatar
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    No problem and top marks for making the revision (it will save you a lot of hassle too if people started sending them back broken).

    Bryce.

  5. #35
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    Payment done! PM answered. Thx

  6. #36
    anemo's Avatar
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    Quote Originally Posted by Knecht View Post
    Payment done! PM answered. Thx
    Payment received. Will ship this weekend.
    A1200 | WB3.1 | 4Gb CF | ACA1233n/40+FPU | PCMCIA wifi card + C64 (-82 Breadbin) | C1541 | Pi1541

  7. #37
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    Will make payment tonight, still interested.

  8. #38
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    Quote Originally Posted by botialoach View Post
    Will make payment tonight, still interested.
    Payment has just been made, Thank you

  9. #39
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    Quote Originally Posted by botialoach View Post
    Quote Originally Posted by botialoach View Post
    Will make payment tonight, still interested.
    Payment has just been made, Thank you
    Payment received. I will ship this weekend.
    A1200 | WB3.1 | 4Gb CF | ACA1233n/40+FPU | PCMCIA wifi card + C64 (-82 Breadbin) | C1541 | Pi1541

  10. #40
    VCCUG Amibayer! SaviorX's Avatar
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    payment has been sent, pm replied to with info

    thank you.
    VIC20-C64(2)-C64C-C128-C128D(CR)-1541(10)-1571(3)-1581(2)-SDuIEC-1750-Super1750Clone-TI99/4A-Amiga2000(030/33mhz/12mb)-A500(1mb) - A1000(2mb)-AppleIIe(4)-AppleIIgs(3)-Atari2600jr-Atari2600(woody)-ColecoGemini-Atari2600(Vader)-SearsVideoArcadeII-Atari7800-Intellivision-Colecovision(2)- ADAM-Odyssey2-NES-SNES(2)-GB-GBA-GBA(SP)-N64(3)-GC(3)-SMS-GG- Genesis(4)-SegaCD-Nomad-Saturn-Dreamcast-TG16(2)-TurboExpress-NEOGEO PocketColor-3DO-PS1-PS2-Atari800XL-Atari520STm-Atari600XL-CoCo3-Vectrex

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